A fourth British victim of the Algerian siege has been named as efforts continued to repatriate their bodies.

Six UK nationals are thought to have died in the terror attack at the In Amenas plant. The Foreign Office issued a statement from the family of Sebastian John which said he would be eternally missed. There was no immediate information on where Mr John lived.

His wife Nicola John said: "Sebastian was the most amazing person. He was a fantastic husband, father, son and brother. There won't be a moment that goes by where we won't think of him.

"We are so proud of Sebastian for all he achieved in his life. He was taken away from us too early and in the most tragic circumstances. We will always love him, he will be forever in our hearts and eternally missed. Please respect our privacy at this difficult time."

A total of 37 foreign workers are believed to have died at the remote desert facility - part-operated by BP - which was overrun by heavily-armed terrorists. Some 29 of the hostage-takers died, while three were captured by Algerian troops during a special forces mission to end the four-day stand-off.

Three of the Britons killed have been named as 46-year-old security expert Paul Morgan, systems supervisor Garry Barlow, 49, from Liverpool, and 59-year-old planning manager Kenneth Whiteside, from Glenrothes, Fife. Colombian BP executive Carlos Estrada, who lived in London, is also believed to have died.

The family of a British survivor said on Wednesday they were overjoyed that he is safe and well, but need time to come to terms with what has happened.

In a statement issued through the Foreign Office, Lou Fear's loved ones said: "The family is greatly relieved by Lou's safe return. This has been a very traumatic experience for the whole family, especially Lou. Our thoughts are with Lou's colleagues and their families.

"We now need to start the process of coming to terms with what has happened and need time alone to do this. We therefore ask that the media respect our privacy."

The Foreign Office refused to confirm any further details but, according to reports in the Daily Mail, Mr Fear, 56, who reportedly lives in Louth, Lincolnshire, and was working as a team leader for BP, hid when the raid on the refinery began, then walked for 20 hours to reach safety.